atmospheric oxygen

By around two billion years ago, atmospheric oxygen was on the increase.

A cut along the spectrum shows the absorption lines of atmospheric oxygen.

Moisture and atmospheric oxygen should be excluded from the reaction.

On Earth, the excess fuel burns in contact with atmospheric oxygen.

She doubted that the world climate would change or the atmospheric oxygen be reduced.

Marine algae living in this new sea raised the level of atmospheric oxygen.

A primary size-limiting factor is the amount of atmospheric oxygen.

Atmospheric oxygen and water vapor must lie within tight limits.

This allows, for example, atmospheric oxygen to be reduced in photosynthesis.

Scientists have long suspected that atmospheric oxygen played a central role in both the rise and fall of these organisms.

More to the point, it was mainly the blue-greens that created atmospheric oxygen.

The appearance of gigantic insects has been found to be consistent with high atmospheric oxygen.

The major source of atmospheric oxygen is plant photosynthesis.

The low reactivity of atmospheric oxygen is due to its diradical state.

Microplasmas are being used for the formation of ozone from atmospheric oxygen.

Reducing agents tend to get consumed by atmospheric oxygen.

Water and atmospheric oxygen also must be consumed in large quantities, but are not always considered "food" or "nutrients".

It also greatly accelerates the corrosion rates by atmospheric oxygen.

Some 1800 million years ago atmospheric oxygen was fast approaching the present level of about 21 per cent of the total.

There is an apparent direct relationship between orogeny and the atmospheric oxygen content).

"The last thing you want to do is expose it to atmospheric oxygen and water by moving it to the pit."

This gigantism may have been due to higher atmospheric oxygen levels, which allowed increased respiratory efficiency.

Interestingly, there is no significant correlation between atmospheric oxygen and maximum body size elsewhere in the geological record.

The idea behind a turborocket is to supplement the atmospheric oxygen with an onboard supply.

The second adaptation, the teleostomes also developed a primitive lung with the ability to use some atmospheric oxygen.